Near-unity indistinguishability single photon source for large-scale integrated quantum optics

Abstract

Integrated single photon sources are key building blocks for realizing scalable devices for quantum information processing. For such applications highly coherent and indistinguishable single photons on a chip are required. Here we report on a triggered resonance fluorescence single photon source based on In(Ga)As/GaAs quantum dots coupled to single- and multi-mode ridge waveguides. We demonstrate the generation of highly linearly polarized resonance fluorescence photons with 99.1% (96.0%) single-photon purity and 97.5% (95.0%) indistinguishability in case of multi-mode (single-mode) waveguide devices fulfilling the strict requirements imposed by multi-interferometric quantum optics applications. Our integrated triggered single photon source can be readily scaled up, promising a realistic pathway for on-chip linear optical quantum simulation, quantum computation and quantum networks.

References in corpus (7)

• Experimental realization of highly-efficient broadband coupling of single quantum dots to a photonic crystal waveguide
• How good must single photon sources and detectors be for efficient linear optical quantum computation?
• Gallium Arsenide (GaAs) Quantum Photonic Waveguide Circuits
• An integrated source of spectrally filtered correlated photons for large scale quantum photonic systems
• Controlled-NOT gate operating with single photons
• Monolithic Integration of a Quantum Emitter with a Compact On-chip Beam-splitter
• Monolithic on-chip integration of semiconductor waveguides, beamsplitters and single-photon sources